Commensalism

This is a picture of a tree and a separate plant living on the tree. This situation of the two plants is an example of commensalism. Commensalism is a type of relationship between to organisms, in which one lives with, on, or within the other without harming each other. One species may be obtaining food or someway of benefiting from the other species. The picture of the multicolored leaf plant is clearly benefiting from the tree stalk, but it is not harming it in anyway.

Ethylene

This is a picture of a ripening banana. Ripening bananas are an example of ethylene. Ethylene is the plant hormone that stimulates or regulates fruit ripening, flower wilting, and leaf fall. The ethylene gas (hydrocarbon) stimulates the conversion of starches and acids to sugars. As the banana ripens more and more, the color will continue to darken.

Gibberellins

This is a picture of seedless grapes. Grapes are an example of gibberellins. Gibberellins are plant growth hormones that stimulate stem elongation, germination, and flowering. They regulate growth and influence various developmental processes of the plants. Adding gibberellins to crops can also produce seedless fruits (such as seedless grapes) when applied at the precise time.

C3 Plant

This is a picture of fescue grass. Fescue grass (most lawn grasses) are an example of a C3 plant. C3 plants are those that are the most common and most efficient at using photosynthesis in cool, wet climates. They use the Calvin cycle to fix the carbon dioxide from the air. This grass is a C3 plant because it need wetter climates in order for photosynthesis to proceed properly.

Phloem

This is a picture of a celery stalk. A celery stalk is an example of phloem. Phloem is the tissues of vascular plants that conducts the sugars produced by photosynthesis to all parts of the plant. Phloem consists of the cells; sieve elements, parenchyma cells, sclereids, and fibers. This picture is the cross section of a celery stalk which contain the tissues phloem and xylem. While phloem transports the foods (sugars), xylem transports water and other nutrients throughout the plant. 

Adaptation of a Plant

This is a picture of a pitcher plant. Pitcher plants are an example of a adaptation of a plant. Adaptations of a plant are special characteristics or features of the plant that allow them to survive/live in a particular place and environment. Adaptations for a plant in one particular place would make it difficult for it to survive in a different habitat. The pitcher plant has adapted to become a carnivorous plant due to poor nutrient soil living conditions. They created a special feature for the plant to absorb nutrients and use their brightly colored leaves to attract its' prey.

Seed Dispersal

This is a picture of a Western Grey Squirrel with a nut in it's mouth. This squirrel represents an example of seed dispersal. Seed dispersal is the movement/transport of a seed away from its parent plant. Plants rely on wind, water, and animals to spread their seeds. Squirrels often times take acorns from oak trees and either store or eat them for later. Sometimes they forget where they buried their nuts, which therefore allows the seed to germinate.